Pakistan pace bowler Mohammad Asif claimed his first 10-wicket haul as Sri Lanka collapsed to 73 for eight in their second innings of the second Test on Tuesday.
Replying to Sri Lanka's 279, Pakistan lost their way after a solid start and were bowled out for 170 in just 52.4 overs just after tea on the second day.
Asif hit back during two long spells of sustained hostility in the final session of a day in which 20 wickets fell.
Superbly exploiting a difficult pitch offering extravagant seam movement and increasing variations in bounce, Asif claimed five for 27 in 12 overs as Sri Lanka closed with a lead of 182 runs.
The 23-year-old's haul followed a career-best six for 44 in the first innings to give him match figures of 11 for 71.
Sri Lanka were not helped by an injury to Sanath Jayasuriya, who is unlikely to play any further part in his final Test.
The opener, who announced his decision to retire last Friday, dislocated his thumb while catching Imran Farhat in the morning.
Asif ripped through the top order, bowling Upul Tharanga (12), Kumar Sangakkara (16) and Thilan Samaraweera (four).
Sri Lanka's woes deepened as Mahela Jayawardene (15), struggling after being hit painful in the ribs, had his off stump knocked flat by a delivery from Abdul Razzaq that nipped back sharply.
FIVE-WICKET HAUL
All-rounder Farveez Maharoof (one) went lbw and Tillakaratne Dilshan (11) edged to wicketkeeper Kamran Akmal to give Asif his second five-wicket haul of the match.
Tailenders Nuwan Kulasekera (six) and Malinga Bandara (four) were dismissed by Razzaq, who finished with three for 20 when bad light stopped play four overs early.
Resuming on 267-8, Sri Lanka added just 12 runs before Nuwan Kulasekera (13) was bowled by Asif and Lasith Malinga (9) was caught in the covers off leg spinner Danish Kaneria.
Stand-in opener Akmal -- promoted after Shoaib Malik pulled out of the match with a fever -- and Farhat gave the tourists a sold start with a 57-run opening stand.
However, Sri Lanka struck twice in the final half hour of the morning as Pakistan reached lunch on 71-2.
After the break, Mohammad Yousuf (17) and Younis Khan (35) shared a 50-run partnership for the third wicket before Muttiah Muralitharan struck for a second time.
He bowled Yousuf trying to force an off break through the off side. Younis was then caught at slip off pace bowler Maharoof before Muralitharan trapped Faisal Iqbal lbw for five and bowled Razzaq for four. Muralitharan took five for 39 from 16.4 overs.
Inzamam-ul-Haq was run out for 15 after a direct hit from substitute fielder Chamara Kapugedera in the penultimate over before tea.
The first Test in Colombo ended in a draw.
Scorecard
Sri Lanka (1st innings): (overnight 267-8)
U Tharanga c Younis b Asif 10
S Jayasuriya b Asif 14
K Sangakkara c Faisal b Kaneria 79
M Jayawardene c Farhat b Asif 4
T Samaraweera b Asif 65
T Dilshan c Akmal b Kaneria 22
Farveez Maharoof c Younis b Kaneria 7
M Bandara c Akmal b Asif 43
N Kulasekara b Asif 13
L Malinga c Razzaq b Kaneria 9
M Muralitharan not out 1
Extras: (lb-4, w-1, nb-2, pen-5) 12
Total: (all out in 91.2 overs) 279
Fall of wickets: 1-18, 2-27, 3-61, 4-142, 5-142, 6-178, 7-238, 8-256, 9-271
Bowling: Asif 23-7-44-6, Gul 23-3-83-0, Rao 11-1-54-0, Kaneria 23.2-6-53-4, Razzaq 11-1-36-0.
Pakistan (1st innings):
Imran Farhat c Jayasuriya b Kulasekera 23
Kamran Akmal c Jayawardene b Muralitharan 33
Younis Khan c Samaraweera b Maharoof 35
Mohammad Yousuf b Muralitharan 17
Inzamam-ul-Haq run out 15
Faisal Iqbal lbw b Muralitharan 5
Abdul Razzaq b Muralitharan 4
Rao Ifthikar not out 9
Umar Gul c Sangakkara b Kulasekera 4
Mohammad Asif run out 0
Danish Kaneria c Sangakkara b Muralitharan 4
Extras: (4-b, 9-lb, 7-nb, 1-w) 21
Total: (all out, in 52.4 overs) 170
Fall of wickets: 1-57, 2-71, 3-121, 4-125, 5-140, 6-149, 7-162, 8-166, 9-166.
Bowling: Lasith Malinga 6-2-19-0, Ferveez Maharoof 14-2-54-1, Nuwan Kulasekera 16-3-45-2, Muttiah Muralitharan 16.4-4-39-5.
Sri Lanka (2nd innings):
Upul Tharanga b Asif 12
Kumar Sangakkara b Asif 16
Mahela Jayawardene b Razzaq 15
Thilan Samaraweera b Asif 4
Tillakaratne Dilshan c Akmal b Asif 11
Ferveez Maharoof lbw b Asif 1
Malinga Bandara c Akmal b Razzaq 4
Nuwan Kulasekera c Gul b Razzaq 6
Lasith Malinga batting 0
Extras: (3-lb, 1-w) 4
Total: (for 8 wkts, in 24.4 overs) 73
Fall of wickets: 1-22, 2-40, 3-46, 4-56, 5-57, 6-65, 7-72, 8-73.
Bowling: Mohammad Asif 12-6-27-5, Rao Ifthikar 3-1-8-0, Umar Gul 3-0-15-0, Abdul Razzaq 6.4-1-20-3.
